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ELEME6 Block?
Hey everyone, I used MESHMaker to create an axisymmetric mesh (RZ2D), and it created an ELEME block with 6-digit character codes (titled ELEME6). Is this due to the number of elements I requested?…
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CO2 mass balance
Hi all, I am experiencing a problem with CO2 mass balance in TOUGH2/ECO2N output. I am not able to figure out the reason behind missing CO2. After a year,…
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Problem with building heterogeneous CO2 storage model
Hi all, I need to build a CO2 storage model with heterogeneous permeability field using TOUGH2/ECO2N. I built a homogeneous model first and it could be ran successfully.…
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Problem initializing a low permeability EOS7C simulation
Hello, I am trying to set up a model with EOS7C, with which I plan to simulate methane generation within a large, low permeability domain over a long period of time.…
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How to choose the module to simulate the Terzaghi's one-dimensional consolidation?
Hi everybody, as stated in the title，i want to simulate Terzaghi's one-dimensional consolidation, but i'm not sure which module of TOUGH2 i should choose, can any body tell me? thanks very much.…
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Gas density in EOS2 is unrealistic(5000kg/m3)
Hello all: I set up a model to simulate CO2 displace water in core by EOS2 module. The inlet is CO2 mass inlet boundary condition, and the outlet is constant pressure boundary condition(10MPa).…
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Temperatures reaching out of range in EOS2 despite no GENER block
Hi all, I am trying to run a model operating at temperatures close to the maximum modelled by TOUGH (360C) due to the system it is based on. Since this is only 13 C cooler than what is achievable by…
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Setting conditions for not boundary blocks
Hello: How can i set a constant temperature condition for not boundary blocks with constant flow? How does it works for a non isothermal case? Thank you for the answers.
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slightly increased liquid viscosity
Hi, dear all I have one question about eos1. To construct a sensitivity matrix 'co' in subroutine 'multi' , we obtain secondary parameters using slightly increased primary variables,…
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Increase maximum number of elements/connections
Hi, I’m trying to increase the maximum number of elements/connections by recompiling the source code ( I’m on a Windows 7 64 bit pc and access gfortran through Cygwin).…
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How to simulate bubble flow in non-Newtonian fluids (such as drilling mud)?
I am trying to create multiple simulation scenarios, one of them is to simulate discrete bubble flow through drilling much, which is also a non-Newtonian fluid.…
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Problems with ECO2N V. 2.0
Hi All, I am experiencing some problems with the latest version of ECO2N. I have a series of simulations that run fine using ECO2N V1.0. However in version 2.…
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ECO2N Steady state
Hi everybody! I'm a new Tough2 ECO2N user and i'm experiencing some problems by reaching the steady state condition... I will use it as Initial conditions for the simulations.…
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Porosity, Permeability and Capillary Pressure Modification Block by Block
Hi All, I've read in TOUGH2 manual about how to change permeability and capillary pressure of each element using PMX column in element block. But I find some problem when I need to change…
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How to model a leakage around existing well annulus in TOUGH
We are trying to model gas leakage around exisiting well annulus (The space between wellbore and casing, where fluid flow can occur). However, the aperture is relative large and I wonder whether this…
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No primary variable data are displayed in output file.
Hello, I'm trying to mimic darcy's law with EOS1 module. I made a model and simulate with the below input files (the first and second figure). I think the simulation ends successfully,…
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To have "Component mass in place" in a single cell
Hello everyone , In the output file of TOUGH2, for each plot time value, there is the -component mass in place- table, in which I think, are reported the mass of each component referred to the total…
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Compilation of source code files
To increase the maximum number of elements in Tough2 above 12000, we changed the T2 file in the fortran source code, and are now trying to compile the source code files according to the instructions…
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injection using well on delivery
Hello, What is the correct way to use the well on delivery option for injection? Background: I'm using EOS7C and attempting to inject methane into my modeled domain at a depth of about 30 m below…
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Zero flux conditions
Hello everyone , Could someone explain to me how to impose the zero flux conditions in a generic domain? Thank you.
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The CO2 plume migraion is very strange.
The CO2 plume migraion is very strange. Can anybody tell me why is this case? Thanks very much. Sawyer.
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Implementing meteoric recharge into atmospheric boundary condition?
Hi all, Does anyone have a recommended method for specifying different rates of meteoric recharge to TOUGH2 models? Would specifying different air:water ratios in the atmospheric block work? Thanks,…
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How can I simulate the thermal diffusion (Soret effect) ?
Dear everyone, I am New in using TOUGH, i want to simulate the thermal convection of a binary mixture methane & n-butane in non-isothermal condition. I want to take in consideration the soret effect.…
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How to determine the influence of boundary size?
Hi all, when i use tough2(ECO2N), i'm not sure whether the boundary size i chosen is appropriate, can anybody tell me how to determine the boundary size? thans very much! sawyer
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Generating initial conditions
Hi All, I am having problems generating initial conditions with the new version of T2ECO2N (v 2.1) that I have just purchased. Previously I would assign a large volume block at the top and base of…